Energy and Power
Problems with audible substation noise and what you can do about it
Audible substation noise, particularly continuously radiated discrete tones (e.g., from power transformers), is the type of noise that the community may find unacceptable. Community guidelines to ensure that acceptable substation noise levels are maintained can take the form of governmental… Read more
Oct 03, 2016 | By Edvard Csanyi
Low Voltage
7 typical layout designs of 11kV indoor distribution substation
The following layout designs of indoor distribution substation are typical only and should not be used as construction drawings as they are presented as an example. Some designs achieve minimum EMF emission by installing the low voltage cables and switchboard… Read more
Sep 26, 2016 | By Edvard Csanyi
Energy and Power
8 steps to follow in power substation design and engineering
Building a new substation or retrofitting the old one is a complex process full of design and engineering tasks to be worked on. The main steps in substation design and engineering are as follows: Selection of a substation switching system:… Read more
Sep 21, 2016 | By Edvard Csanyi
Maintenance
Should you choose fixed or withdrawable medium voltage switchgear?
How to make the right choice between fixed or withdrawable medium voltage switchgear when selecting a new equipment for power substation? The following evaluation procedure should be conducted: Find out how important the additional aspects are. Weigh up the financial… Read more
Aug 22, 2016 | By Edvard Csanyi
Power Substation
What happens when a transformer fire occurs in a substation
If a fire occurs as a result of a failure in a transformer, then the transformer is nearly always a total write off. However, the total cost of a transformer fire is typically in the order of 2-3 times the… Read more
Aug 12, 2016 | By Edvard Csanyi
Power Substation
Five transformer constructions you’re most likely to see inside buildings
There are several different types of transformer constructions you can see installed in substations inside commercial and other buildings. This article is generally applicable only to transformers of the liquid filled, ventilated dry, or gas filled dry types. Liquid insulated and gas… Read more
Aug 01, 2016 | By Edvard Csanyi
Energy and Power
How standby generators work and how to dimension them?
Standby generators are used in order to provide consumers in the system entitled to standby service in the event of breakdown or shutdown of the normal power supply. They consist of the generator, the flywheel and the motor. For the… Read more
Jul 26, 2016 | By Edvard Csanyi
Power Substation
What is distribution substation and its main components?
Distribution substation typically operates at 2.4 – 34.5 kV voltage levels, and deliver electric energy directly to industrial and residential consumers. Distribution feeders transport power from the distribution substations to the end consumers’ premises. These feeders serve a large number of premises… Read more
Jul 22, 2016 | By Edvard Csanyi
Power Substation
Where and Why Do We Use Grounding Transformer (zig-zag, grounded wye-delta)
Grounding transformers are sometimes used on distribution systems. A grounding transformer provides a source for zero sequence current. Sometimes they are used to convert a 3-wire, ungrounded circuit into a 4-wire, grounded circuit. Figure 1 (see below) shows the two most common grounding transformers. The… Read more
Jun 08, 2016 | By Edvard Csanyi
High Voltage
Where Do We Use Arc Suppression Coil (Petersen Coil)?
The arc suppression coil (ASC), also known as Petersen coil, is used to compensate the capacitive earth fault currents supplied by outgoing feeders at a substation. The compensation can be either centralized or distributed. With the centralized design, one ASC… Read more
Jun 06, 2016 | By Edvard Csanyi
Power Substation
Influence Of Electric Field and Clearances In EHV AIS Substation
Bus height is also governed and calculated by the fact that allowable electric field due to live conductor at man height should be less than permissible value as per guidelines laid down by EPRI AC transmission Line Reference Book –… Read more
May 27, 2016 | By Asif Eqbal
Power Substation
Clearance Requirements In EHV AIS Substation You MUST Respect
Starting point for planning a substation is its single line diagram (SLD) which relates to circuit configuration, number of bus bars and its type and other associated equipment. However from erection and installation point of view layout of any substation… Read more
May 25, 2016 | By Asif Eqbal
Cables
Shielding and Grounding Practices for Control Cables in EHV Substations
For several years, the increased application of solid-state devices for protective relaying and control and for electronic equipment, such as audio tones, carrier and microwave equipment, event recorders, and supervisory control equipment, in EHV substations has resulted in many equipment… Read more
May 20, 2016 | By Edvard Csanyi
Power Substation
Does transformer hum make you nervous? It does me.
Noise is caused by magnetostricition (changes in shape) of the core laminations while the transformer is energized. Transformers emit a low-frequency, tonal noise that people living in their vicinity experience as an irritating “hum” and can hear even against a… Read more
May 04, 2016 | By Edvard Csanyi
Energy and Power
3 Designs of DC Distribution Systems In Power Substations
The method of connection of the battery, battery charger, and DC distribution systems depends on the duty, the type or load, and whether the system needs to be duplicated or whether duplicate chargers are required. One typical example for a… Read more
Apr 20, 2016 | By Edvard Csanyi
